The FT223C serves as a replacement screw for various release plates and camera mounts. The thumbscrew designs makes it easy to securely tighten and loosen the screw. The screws includes a 1/4-20 threaded hole in the base so it can be mounted on other 1/4-20 studs. The FT223C is NOT a replacement for all release plate screws. Please see sizing in specifications to determine if this item will fit your needs.